研究目的
To develop and characterize a glove-integrated slotted patch antenna for a wearable UHF RFID reader, focusing on miniaturization, flexibility, and stable operation near the human body to achieve a high read range for work glove applications.
研究成果
The developed glove-integrated slotted patch antenna operates effectively at 866 MHz with a read range of up to 360 cm at 28.4 dBm power, demonstrating suitability for wearable UHF RFID applications. It shows stability against variable body-antenna separations. The simulation model is adequate for reflection coefficient but requires refinement for accurate radiation property estimation. This work advances flexible, miniaturized antenna designs for body-centric systems.
研究不足
The planar human hand model may not accurately represent all anatomical variations, leading to discrepancies in gain estimation. Fabrication inaccuracies on flexible substrates caused frequency shifts. The antenna's radiation efficiency is relatively low (40.7%), and the read range is limited by transmission power constraints. Future work could involve improving the hand model and exploring higher efficiency materials.
1：Experimental Design and Method Selection:
The study involved designing and optimizing a slotted patch antenna using ANSYS HFSS v16 for simulation, with a focus on miniaturization and integration into a work glove. The antenna was fabricated on flexible EPDM foam substrate with copper tape. Measurements included reflection coefficient, realized gain, radiation pattern, and read range using wireless communication with a dipole RFID tag.
2：Sample Selection and Data Sources:
A planar human hand model composed of seven layers (skin, fat, muscle, bone, muscle, fat, skin) with specific electromagnetic properties was used for simulations. The antenna prototype was tested on a human hand in outdoor environments to minimize multipath effects.
3：List of Experimental Equipment and Materials:
Equipment included Vector Network Analyzer (VNA) for reflection coefficient measurements, Voyantic Tagformance equipment for gain and read range measurements, and ANSYS HFSS v16 for simulations. Materials included EPDM foam substrate (dielectric constant 1.26, loss tangent 0.007, thickness 4 mm), copper tape (thickness 35 μm), and a dipole RFID tag.
4：26, loss tangent 007, thickness 4 mm), copper tape (thickness 35 μm), and a dipole RFID tag.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna was simulated and optimized in HFSS using the hand model. After fabrication, it was mounted on a human hand. Measurements were conducted: (a) reflection coefficient at varying distances (0, 2, 4, 6 mm) from the hand using VNA, (b) realized gain using Tagformance equipment with the tag at 0.8 m distance, and (c) maximum read range by varying transmission power at 866 MHz.
5：8 m distance, and (c) maximum read range by varying transmission power at 866 MHz.
Data Analysis Methods:
5. Data Analysis Methods: Data were analyzed using Friis transmission equation to compute realized gain and read range. Statistical comparisons between simulated and measured results were made to validate the model and antenna performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
